Sports Network

ASHBURN, Va. -- The Washington Redskins have placed wide receiver Malcolm Kelly on injured reserve because of a hamstring problem.

Kelly, in his third year out of Oklahoma, was bothered by the hamstring issue for the majority of the summer. He aggravated the injury in practice earlier this week.

"When he tried to go full speed, I think that's when he really hurt himself and set himself back," said Redskins head coach Mike Shanahan.

Kelly played all 16 games last season and started 10 after appearing in just five games in his rookie campaign. He finished with 25 catches for 347 yards in 2009.

The Redskins also released four players to get to the 75-man limit Tuesday, parting with offensive lineman Edwin Williams, safety Lendy Holmes, long snapper James Dearth and linebacker Hall Davis. Williams started two games at right guard for the club in 2009.